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Central government role in road infrastructure development and economic growth in the form of future study: the case of Indonesia

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City, Territory and Architecture 2023年第1期10卷 12页

作者： Nawir, Daud Bakri, Muhammad Djaya Syarif, Iif Ahmad Study Program of Civil Engineering Faculty of Engineering Universitas Borneo Tarakan Tarakan Indonesia

Road infrastructure development in a country has been considered an important predictor of economic development and prosperity. Hence applying a systematic analysis approach, this study aims to project the future role of the central government in developing road infrastructure and its significance in the country's economic growth. The main data sources were the literature review and expert opinions in the form of self-administrative surveys and interviews. Besides, the Cross-impact Direct Influence (CDI) matrix was applied to formulate the questionnaire. For the data analysis purpose, MICMAC analysis and Scenario Wizard software were used. The MICMAC analysis results revealed the dominant role of 9 important/key variables in developing the Indonesian road infrastructure. Simultaneously 24 positive states of the important variables what identified via the Scenario-Wizard Method. Findings also depicted stronger consistency among the four scenarios. Whereas Scenario 1 showed the most ideal 9 key features related to Indonesia’s road infrastructure developments with a high intensity of concentrating the efforts on planning road infrastructure development in big cities and use of smart and modern technology. Moreover, presenting a group of constructs for developing road infrastructure and resultant economic growth in the country, the current study adds value to the existing literature. © 2023, The Author(s).

关键词： Central government role Economy growth Future study Road infrastructure Scenario-based planning

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Variable Length Multi-Objective Whale Optimization for Trust Aware Data Gathering in Wireless Sensor Network

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IEEE Access 2025年 13卷 32100-32121页

作者： Saad, Mohammed Ayad Jaafar, Rosmina Chellappan, Kalaivani Faculty of Engineering and Built Environment Department of Electrical Electronics and System Engineering Selangor Bangi43600 Malaysia Al-Kitab University Department of Medical Instrumentations Technique Engineering Kirkuk36001 Iraq Universitas Airlangga Biomedical Engineering Study Program Faculty of Science and Technology Surabaya60115 Indonesia

Efficient data collection in wireless sensor networks (WSNs) is crucial. While traditional approaches rely on stationary data sinks, the use of mobile sinks, like unmanned aerial vehicles (UAVs), has shown promise in enhancing data-gathering capabilities. However, existing methods often overlook the importance of trust, leaving the network susceptible to malicious or faulty nodes. To address this issue, we propose a novel trust-aware data-gathering algorithm, Variable Length Multi-Objective Whale Optimization Data Gathering (VLMOWO-DG). Our algorithm simultaneously optimizes energy consumption, delay, and trust while employing mobile sinks to collect data from sensor nodes. By considering trust as a key performance metric, we improve data reliability and security. The VLMOWO-DG algorithm introduces flexibility through variable-length solution representation and application-oriented operators, allowing for efficient exploration of the solution space. Simulation results demonstrate that our proposed algorithm significantly outperforms established benchmarks, NSGA-II and NSGA-III, in terms of domination and hypervolume. This leads to a remarkable improvement of 200% in data gathering performance. © 2015 The Authors.

关键词： Data collection

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The use of Carica papaya seeds as bio coagulant for laundry wastewater treatment

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Journal of engineering and Applied Science 2024年第1期71卷 99页

作者： Vezar, Siti Alfinna Naulita Belinda, Zeriyatina Tri Rendana, Muhammad Agustina, Tuty Emilia Nasir, Subriyer Hanum, Laila Andarini, Desheila Undergraduate Student of Chemical Engineering Program Faculty of Engineering Universitas Sriwijaya Sumatra Selatan Indralaya30662 Indonesia Chemical Engineering Program Faculty of Engineering Universitas Sriwijaya Sumatra Selatan Indralaya30662 Indonesia Biology Department Faculty of Mathematics and Natural Sciences Universitas Sriwijaya Sumatra Selatan Indralaya30662 Indonesia Public Health Program Study Faculty of Public Health Universitas Sriwijaya Sumatra Selatan Indralaya30662 Indonesia

The study aims to analyze the effectiveness of wastewater treatment by using Carica papaya seeds as bio coagulants to diminish total suspended solids (TSS) and excess phosphate. This method has some advantages because it does not use chemical materials, is simple to apply, and is safe for the environment and human health. The wastewater samples were taken from an active laundry site in Palembang City, South Sumatra Province of Indonesia. The study found that the best dosage of coagulant was 3 g for the wastewater samples. The pH and BOD parameters showed slight changes after treatment, with pH 7.63–7.19 and 33–27 mg/L values, respectively. The TSS removal efficiency ranged from 9.3 to 15.6%, while the COD and phosphate removals were obtained from 11.7 to 39.3% and 56.3 to 68.4%, respectively. The treated TSS, COD, and phosphate concentrations have met the Indonesian domestic wastewater quality standard and environmental protection organization (EPO) guidelines. In addition, the statistical analysis and t-test showed significant differences (p © The Author(s) 2024.

关键词： Wastewater treatment

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Analysis of Chiller Machine Energy Efficiency in the Paint Shop Air Handling Unit (AHU) Process 7

Analysis of Chiller Machine Energy Efficiency in the Paint S...

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7th Astechnova International Energy Conference, ASTECHNOVA 2023

作者： Maulana, H. Kusumah, L.H. Study Program of Industrial Engineering Faculty of Technique Universitas Mercubuana Jakarta Indonesia

The Energy Efficiency in Industrial, Commercial, and Public Sector (EINCOPS) program is the result of a collaboration between the Indonesian Ministry of Energy and Mineral Resources and Danida (Danish International Development Assistance), which began in 2008 to support Indonesian government policies in achieving development goals in the field of sustainable environmental management. Energy users have gradually adopted energy efficiency measures in the industrial, commercial, and public sectors, starting with a large class. This research aims to obtain the optimal temperature range for using a chiller machine so that it continues to run efficiently. The method used is to calculate the coefficient of performance and energy efficiency ratio of each chiller when it is used. The number of chillers can be affected by the temperature range of the air handling unit (AHU), which uses wind from the environment as the main source for processing, and the temperature range is linear with weather conditions. This research found that in the environmental temperature range of 26°-29° Celsius taken by AHU for distribution to production areas, chiller performance is still not optimal. In the previous operation, three chillers were used out of the four available units, so after knowing the results of the chiller load analysis in this temperature range were still below standard or not optimal, the number of chillers could be reduced from three units full time to only two units when the temperature environment was in the range of 26°-29° Celsius. The results of calculating the average Coefficient of Performance and Efficiency Energy Ratio using two chillers when the temperature range of 26°-29° Celsius is still included in the standard, namely by increasing 0.15, the pre-improvement value is 5,833, and the chiller efficiency load increases to 14 percent. © Published under licence by IOP Publishing Ltd.

关键词： Mineral resources

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Nanoparticle formulation of ZnO: TiO2 as sunscreen cream for Cutaneous Lupus Erythematosus (CLE) patients 12

Nanoparticle formulation of ZnO: TiO2 as sunscreen cream for...

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12th International Conference on Physics and Its Applications, ICOPIA 2024

作者： Siswanto Qulub, Fitriyatul Junico, Vallery Ofelia Viannco Physics Program Study Faculty Science and Technology Universitas Airlangga Surabaya Indonesia Biomedical Engineering Program Study Faculty Science and Technology Universitas Airlangga Surabaya Indonesia

Cutaneous Lupus Erythematosus (CLE) is a form of lupus that affects the skin and is highly sensitive to ultraviolet (UV) light. UV-B. in particular. can trigger inflammation and apoptosis in CLE patients. making a sunscreen with effective UVB protection crucial. This study evaluates the effectiveness of zinc oxide (ZnO) and titanium dioxide (TiO2) nanoparticles in sunscreen. ZnO and TiO2 nanoparticles were prepared using the High Energy Milling method. resulting in particle sizes of 7.77 nm and 4.44 nm. respectively. The creams containing these nanoparticles were tested for physical stability and UV protection. Results showed that the creams were physically stable and provided good UV protection. with ZnO and TiO2 nanoparticles making up 12.60% of the total cream ingredients. resulting in the highest SPF (Sun Protection Factor) value of 62.0 ± 1.37. © 2025 Institute of Physics Publishing. All rights reserved.

关键词： TiO2 nanoparticles

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Aerodynamic Analysis of Obhi-Mec Unud Bio-Hybrid Electric Vehicle Using Computational Fluid Dynamics 4

Aerodynamic Analysis of Obhi-Mec Unud Bio-Hybrid Electric Ve...

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4th International Symposium on Advances and Innovation in Mechanical engineering, ISAIME 2023

作者： Robert, Rivaldo Anderson Sucipta, Made Made Widiyarta, I. Meylinda, Cindy Dwi Sinaga, Betty Florensia Study Program of Mechanical Engineering Faculty of Engineering University of Udayana Kampus Unud Jimbaran Bali Badung80362 Indonesia

The aerodynamic properties of a vehicle are a factor in vehicle body development, such as the drag force, lift force, and flow pattern that occurs on the vehicle body. Using computational fluid dynamics (CFD), such as ANSYS Fluent, those properties can be investigated to design and analyze in many applications. Obhi-Mec Unud Bio-Hybrid is one of the electric vehicles developed to support the decarbonization program investigated through the fluid flow phenomenon to evaluate the drag and lift forces. The ANSYS Fluent with a realizable k-epsilon flow model with a pressure-based solver and steady flow was simulated with various vehicle velocities of 30, 40, and 50 km/h. It is found that the increase in vehicle velocity increases the drag and lift forces experienced by the vehicle. These results are due to the flow disturbance phenomena observed around the vehicle body, such as flow stagnation points, boundary layers, flow separation, and wake and vortex formation. © 2025 Institute of Physics Publishing. All rights reserved.

关键词： Computational fluid dynamics

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Design Implementation of Flood Early Warning System for Residential Monitoring

Design Implementation of Flood Early Warning System for Resi...

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2023 International Conference on Radar, Antenna, Microwave, Electronics, and Telecommunications, ICRAMET 2023

作者： Simatupang, Joni Welman Arrazaq, Thariq Auliya Faculty of Engineering President University Electrical Engineering Study Program Cikarang Indonesia

ISBN: (纸本)9798350343892

The efforts to mitigate floods are necessary. One of the tools that can contribute to flood mitigation is the Flood Early Warning System (FEWS). The main goal of this study is to design a prototype of FEWS that can be easily used anywhere, anytime, and provide accurate water level readings. The prototype system is designed using an Ultrasonic Sensor for water level detection, an alarm system, and Blynk as a web and mobile dashboard. The prototype consists of four main components: Ultrasonic Sensor HC-SR04, Arduino Nano, NodeMCU, and HC-12. It comprises two units: a transmitter unit and a receiver unit. To determine the accuracy and consistency of the Ultrasonic Sensor, the author conducted testing using calibration, non-continuous, and continuous methods. The accuracy obtained was 99.71%. Additionally, the author observed high consistency in the readings of the ultrasonic sensor, as evident from continuous sensor reading test results. Furthermore, the receiver unit successfully displayed output according to the water level threshold for each condition. Additionally, the Blynk web and mobile dashboard were able to display output as per the design. However, we suggest adding data logging features and also solar panels as a renewable power source to support the improved prototype system. © 2023 IEEE.

关键词： Floods

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Optimizing Menu Bundling Strategies Through Apriori Algorithm in Sales Analysis 4

Optimizing Menu Bundling Strategies Through Apriori Algorith...

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4th International Conference on Intelligent Cybernetics Technology and Applications, ICICyTA 2024

作者： Tama, Ahmad Sambang Setya Hamami, Faqih Adi, Taufik Nur Telkom University Information Systems Study Program Faculty of Industrial Engineering Bandung Indonesia

ISBN: (纸本)9798331506490

Indonesia, as one of the largest coffee producers and exporters in the world, has experienced significant growth in the number of coffee shops, driven by increasing consumer demand for ready-to-drink coffee. This study aims to enhance sales performance at Authen Café and Space through the implementation of a menu bundling strategy. By utilizing data mining techniques and the Apriori algorithm, customer purchasing patterns were analyzed to identify optimal menu combinations. The data was collected directly at Authen Cafe during the period from April to August 2028. The analysis revealed that bundling strategies, such as combining Ayam Rica-Rica with Es Kopi Susu Karamel, are effective in increasing sales volume and product popularity among consumers. Furthermore, this study evaluated the impact of offering discounts on bundled packages on the café's profitability, demonstrating that this approach can boost net profit without sacrificing profit margins. This research provides significant insights into the application of data-driven marketing strategies within the café'industry and offers guidance for more effective managerial decision-making. © 2024 IEEE.

关键词： Profitability

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Performance Investigation of Water Purification System Assisted by Ultrasonic Vibrating Mesh Atomizer 4

Performance Investigation of Water Purification System Assis...

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4th International Symposium on Advances and Innovation in Mechanical engineering, ISAIME 2023

作者： Agus Tri Putra, I.D.G. Septiadi, Wayan Nata Negara, Dewa Ngakan Ketut Putra Nindhia, Tjokorda Gde Tirta Refrigeration and Air Conditioning Study Program Department of Mechanical Engineering Politeknik Negeri Bali Bali Bukit Jimbaran80361 Indonesia Study Program of Doctor in Engineering Engineering Faculty Udayana University Bali Bukit Jimbaran80361 Indonesia

The growth of the metropolitan area has necessitated an increase in the demand for freshwater. One of the issues facing modern life is water treatment plant to supporting the communities. The approaches for treatment of the brackish water were carried out utilizing a wide range of technologies and technology. Many different technologies have been created recently to transform brackish water into freshwater using a variety of methods and equipment. One approach to produce extremely tiny water droplets is ultrasonic vibrating mesh. In this research, the performance of ultrasonic vibrating mesh has been investigated to purified the brackish water. This technique is similar to the distillation method in purification system of water traditionally. The evaluation of performance in this context has revolved around two key metrics: the rate of pure water production and the Total Dissolved Solids (TDS) levels. Notably, the TDS content of brackish water saw a significant reduction, di-minishing by approximately 50 ppm, while the resulting quality of the pure water averaged at 354.6 ppm. Concurrently, the flow rate of pure water output was measured at an impressive 4.3 grams per minute. © 2025 Institute of Physics Publishing. All rights reserved.

关键词： Distillation

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Analysis of the institutional development of drinking water supply systems in XYZ City,Indonesia coastal area

River

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River 2023年第2期2卷 158-168页

作者： Firdaus Ali Dwi L.Lestari Marsya D.Putri Khalidah N.Azmi Indonesia Water Institute South JakartaIndonesia Department of Civil Engineering Faculty of EngineeringEnvironmental Engineering Study ProgramUniversitas IndonesiaKampus UI DepokDepok CityIndonesia

Based on the Regulation of the Minister of Public Works and Public Housing Number 4 of 2020,drinking water supply management can stand alone or work together with other *** local government establishes a Regional Drinking Water Company which has responsibility for supplying drinking water at the regency/city *** coastal city as the object of study manages clean water then transfers under a private *** to government restrictions regarding the authority to provide clean water,a technical implementation unit was formed for better solution in clean water *** new form of institution will be able to make decisions and carry out execution at any time because it is directly under the authority of the government,it can also apply the concept of good governance to support more transparent *** accordance with the policy,the new institutional form will be able to finance itself,develop the level of service and contribute to regional development as a source of local ***,the institutional transition requires adaptation both from a functional and operational *** this study,an analysis of the readiness for the transition of institutional forms is carried out to minimize conflicts such the lack of improvement in the quality of drinking water services due to limited government authority,insufficient qualified human resources in water management,and the difficulty of developing drinking water service infrastructure because it still depends on the private *** analysis of the structure and human resources associated with clean water service targets also *** strengthening,both regulatory and institutional,is necessary to maximize the roles and functions of the relevant *** a more comprehensive understanding in the preparation of contracts and division of authority,no parties will be aggrieved in the long term.

关键词： clean water services human resources institutions

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